Addition Drills (3s) - Math Worksheet With Answer Key Page 7
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20Name:
Addition Drills (3s)
Solve each problem.
1
9
6
10
3
5
7
8
2
4
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
4
12
9
13
6
8
10
11
5
7
3
3
3
3
3
3
3
3
3
3
+
6
+
10
+
1
+
4
+
8
+
3
+
7
+
2
+
5
+
9
9
13
4
7
11
6
10
5
8
12
8
6
2
9
1
4
7
5
3
10
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
11
9
5
12
4
7
10
8
6
13
3
3
3
3
3
3
3
3
3
3
+
3
+
4
+
1
+
10
+
6
+
7
+
2
+
8
+
5
+
9
6
7
4
13
9
10
5
11
8
12
10
8
2
6
3
5
7
9
1
4
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
13
11
5
9
6
8
10
12
4
7
3
3
3
3
3
3
3
3
3
3
+
3
+
2
+
6
+
5
+
4
+
10
+
9
+
7
+
8
+
1
6
5
9
8
7
13
12
10
11
4
7
1
6
2
8
10
5
4
9
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
10
4
9
5
11
13
8
7
12
6
3
3
3
3
3
3
3
3
3
3
+
2
+
8
+
10
+
4
+
6
+
5
+
3
+
7
+
1
+
9
5
11
13
7
9
8
6
10
4
12
3
2
8
5
1
9
6
4
10
7
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
6
5
11
8
4
12
9
7
13
10
3
3
3
3
3
3
3
3
3
3
+
9
+
2
+
7
+
1
+
6
+
10
+
4
+
5
+
3
+
8
12
5
10
4
9
13
7
8
6
11
Math
4
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